Is this cheap Track Saw Square worth it?

Here’s the amazon link!!
SYWAN 340mm Right Angle Circular Saw Guide Rail, Woodworking 90 Degree Electric Track Stop Square Accessories Compatible with Fe-stool and Ma-kita Rail (340 * 100 8mm) a.co/d/6dcSuwX
Warning ** This is NOT made in the USA, it took a few weeks for this to arrive from over seas